3M 200 mL Heavy-Bodied Seam Sealer (8308)

The 3M 200 mL Heavy-Bodied Seam Sealer (8308) is a two-part epoxy adhesive designed for sealing seams and joints in automotive body repair. This product is engineered to replicate original equipment manufacturer (OEM) seam sealer appearances, providing a professional finish and reliable protection against moisture, corrosion, and vibration. Its self-mixing cartridge system ensures accurate mixing and easy application, making it a valuable tool for automotive technicians and DIY enthusiasts.

KEY FEATURES AND BENEFITS:

• Two-part epoxy formula: Provides a strong, flexible, and long-lasting seal.
• Self-mixing dual-syringe cartridge: Eliminates manual mixing, ensuring correct ratios and reducing waste.
• Heavy-bodied, non-sagging formula: Allows for easy tooling and texturing to match OEM seams on vertical and horizontal surfaces.
• Fast curing time: Increases productivity and reduces downtime.
• Excellent adhesion: Bonds effectively to primed metal (2K urethane or 2K epoxy primer) and clean, sanded paint.
• Resistant to shrinking and cracking: Performs reliably across a wide temperature range.

SPECIFICATIONS:

• Product Number: 08308
• Size: 200 mL cartridge
• Packaging: 6 cartridges per case
• Base: Epoxy
• Work Time: Approximately 10 minutes
• Full Cure Time: Approximately 1 hour
• Color: Black
• Application: Automotive seam sealing

HOW TO USE:

• Surface Preparation: Ensure the surface is clean, dry, and free of rust, grease, and other contaminants. For optimal adhesion, apply to surfaces primed with 2K urethane or 2K epoxy primer, or clean, sanded paint. Lightly scuff the primed surface with a Scotch-Brite pad for best results.
• Cartridge Preparation: Insert the 3M 8308 cartridge into the appropriate dispensing gun. Attach the mixing nozzle securely.
• Dispensing: Squeeze the trigger of the dispensing gun to begin dispensing the mixed material. Discard the first 1-2 inches of material to ensure proper mixing.
• Application: Apply the seam sealer to the desired area, ensuring complete coverage.
• Tooling: Use appropriate tooling (e.g., spatulas, brushes, seam sealer applicators) to create the desired texture and bead shape to match OEM appearance. Work within the 10-minute work time.
• Curing: Allow the seam sealer to cure fully for approximately 1 hour before painting or further processing.

BENEFITS OF USING 3M 200 ML HEAVY-BODIED SEAM SEALER (8308):

• The self-mixing system ensures consistent results and eliminates the mess and guesswork of manual mixing.
• The heavy-bodied formula allows for easy application and texturing, replicating OEM finishes.
• Fast curing time reduces downtime and increases productivity.
• The resulting seal is strong, flexible, and resistant to environmental factors, providing long-lasting protection for automotive repairs.

FEATURES:

• Precise metered mixing with dual-syringe cartridge.
• Replicates OEM textures and bead shapes.
• Provides a strong, flexible, and weather-resistant seal.